Towed a triple sledding for 8 or so years , like 80,000 plus miles, and now a tandem the lasts 2 winters. If I were to do it over I with out a doubt would buy another triple axle, tows night and day better IMO, so much less sway, you barely notice the trailer is there. If I was only driving an hour to sled I would just buy a tandem, but when we put on 1,000 miles a day and are only pulling off to put fuel in at a truck stop its a no brainer IMO to have that extra axle for stability when the wind picks up. It SUCKS being white knuckled on DRY roads cuz the azz end of your truck is getting kicked out.
Yes it is a little tougher getting turned around in tighter spaces, but you just need to be aware and plan ahead- and its no big deal.